Port Elizabeth Directories:
1908 & 1909 - no James Bell & Co or Matthews, St John
1910 - Bell, Jas & Co (Australia), 51 The Arcade, Second Floor [in the Mutual Building]
1913 - Bell, J & Co, Mutual Blds, Main Street
Matthews, St John, 7 Rink Street
(1914 - 1921 directories are missing)
1922 - Matthews, St John, 51 Mutual Blds, Main Street
(res) 7 Rink Street
(1923 - 1927 directories are missing)
1928 & 1929: Matthews, St John, Agent, Mutual Buildings, 54 Main Street
(he is listed as a General Agent in the Professions & Trades section)
Residence 7 Rink Street
(1930 - 1945 directories are missing)
1946/7 - no entry
Hope this helps
Sandy